ActionScript 3.0 is new; it is exciting, fast, and fully object-oriented. Flash CS3 authoring environment and ActionScript 3.0 provide a great tool for educators in mathematics and sciences to create their own, custmized web-based learning aids. Most of available samples, books, and articles on ActionScript 3.0 (AS3) are not written with mathematical applications in mind and Flash's great potential in that respect is only now being realized. This is where our MathDL Flash Forum and this collection of tutorials come in. You will find here a collection of ActionScript 3.0 and Flash CS3 tutorials prepared with a mathematics educator in mind. We will help you learn AS3 through creating mathematical objects and applets.